African American abolitionist David Walker (1785-1830) wrote Walker's Appeal, urging slaves to resort to violence when necessary to win their freedom.

David Walker was born free, of a free mother and slave father, in Wilmington, N.C., on Sept. 28, 1785. He early learned to read and write, and he read extensively on the subjects of revolution and resistance to oppression. When he was about 30, he left the South, because "If I remain in this bloody land, I will not live long. As true as God reigns, I will be avenged for the sorrows which my people have suffered." In 1826 Walker settled in Boston, Mass., where he became the agent for Freedom's Journal, the black abolitionist newspaper, and a leader in the Colored Association. For a living he ran a secondhand clothing store.

Walker published an antislavery article in September 1828; with three others, it became the pamphlet Walker's Appeal (1829). The...